syz-ci: make some manager creation errors non-fatal

If only part of the managers failed to initialize
we still can continue running the rest.

2 files changed, 15 insertions, 7 deletions

diff --git a/syz-ci/manager.go b/syz-ci/manager.go
index 4867216ca..ef2dc9dcf 100644
--- a/syz-ci/manager.go
+++ b/syz-ci/manager.go
@@ -78,7 +78,7 @@ type Manager struct {
 	stop            chan struct{}
 }
 
-func createManager(cfg *Config, mgrcfg *ManagerConfig, stop chan struct{}) *Manager {
+func createManager(cfg *Config, mgrcfg *ManagerConfig, stop chan struct{}) (*Manager, error) {
 	dir := osutil.Abs(filepath.Join("managers", mgrcfg.Name))
 	if err := osutil.MkdirAll(dir); err != nil {
 		log.Fatal(err)
@@ -95,12 +95,12 @@ func createManager(cfg *Config, mgrcfg *ManagerConfig, stop chan struct{}) *Mana
 	// Assume compiler and config don't change underneath us.
 	compilerID, err := build.CompilerIdentity(mgrcfg.Compiler)
 	if err != nil {
-		log.Fatal(err)
+		return nil, err
 	}
 	var configData []byte
 	if mgrcfg.KernelConfig != "" {
 		if configData, err = ioutil.ReadFile(mgrcfg.KernelConfig); err != nil {
-			log.Fatal(err)
+			return nil, err
 		}
 	}
 	syzkallerCommit, _ := readTag(filepath.FromSlash("syzkaller/current/tag"))
@@ -131,7 +131,7 @@ func createManager(cfg *Config, mgrcfg *ManagerConfig, stop chan struct{}) *Mana
 		stop:            stop,
 	}
 	os.RemoveAll(mgr.currentDir)
-	return mgr
+	return mgr, nil
 }
 
 // Gates kernel builds.
diff --git a/syz-ci/syz-ci.go b/syz-ci/syz-ci.go
index 2c10fc992..38d74d42d 100644
--- a/syz-ci/syz-ci.go
+++ b/syz-ci/syz-ci.go
@@ -154,9 +154,17 @@ func main() {
 		wg.Done()
 	}()
 
-	managers := make([]*Manager, len(cfg.Managers))
-	for i, mgrcfg := range cfg.Managers {
-		managers[i] = createManager(cfg, mgrcfg, stop)
+	var managers []*Manager
+	for _, mgrcfg := range cfg.Managers {
+		mgr, err := createManager(cfg, mgrcfg, stop)
+		if err != nil {
+			log.Logf(0, "failed to create manager %v: %v", mgrcfg.Name, err)
+			continue
+		}
+		managers = append(managers, mgr)
+	}
+	if len(managers) == 0 {
+		log.Fatalf("failed to create all managers")
 	}
 	for _, mgr := range managers {
 		mgr := mgr